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United States Patent |
5,117,652
|
Takeuchi
,   et al.
|
June 2, 1992
|
Air conditioner
Abstract
An air conditioner comprises a compressor for compressing and circulating a
coolant in the cooling circuit, a condenser of the air cooling type for
cooling and condensing the compressed coolant, a condenser of the water
cooling type for further cooling and condensing the coolant which has been
condensed by the air cooling condenser, and two independent air passages
through which air is supplied to both of the air and water cooling
condensers, respectively.
Inventors:
|
Takeuchi; Tomoyoshi (Mishima, JP);
Horimizu; Kiyosi (Fujinomiya, JP);
Sato; Takehiko (Fuji, JP);
Wada; Kouji (Fuji, JP)
|
Assignee:
|
Kabushiki Kaisha Toshiba (Kawasaki, JP)
|
Appl. No.:
|
648231 |
Filed:
|
January 31, 1991 |
Foreign Application Priority Data
| Mar 30, 1990[JP] | 2-84662 |
| Mar 30, 1990[JP] | 2-84666 |
| Mar 30, 1990[JP] | 2-84674 |
Current U.S. Class: |
62/291; 62/305; 62/506 |
Intern'l Class: |
F28D 005/00 |
Field of Search: |
62/305,506,291,429
|
References Cited
U.S. Patent Documents
2296997 | Sep., 1942 | Knoy | 62/506.
|
2736176 | Feb., 1956 | Carlton | 62/291.
|
3006613 | Oct., 1961 | Coyne | 62/429.
|
3026690 | Mar., 1962 | Deverall | 62/305.
|
3435631 | Apr., 1969 | Wood, Jr. | 62/305.
|
3635046 | Jan., 1972 | Sato et al. | 62/305.
|
4069689 | Jan., 1978 | Larriva | 62/305.
|
4918943 | Apr., 1990 | Faust | 62/305.
|
Foreign Patent Documents |
0341370 | Nov., 1989 | EP.
| |
Primary Examiner: Tapolcai; William E.
Attorney, Agent or Firm: Cushman, Darby & Cushman
Claims
What is claimed is:
1. An air conditioner comprising:
a compressor having sucking and discharging ports;
a condenser of the air cooling type having an inlet port connected to the
discharging port of the compressor, an outlet port, and an air inlet side;
a condenser of the water cooling type having an inlet port connected to the
outlet port of the condenser of the air cooling type and an outlet port;
a regulator connected to the outlet port of the condenser of the water
cooling type;
an evaporator connected between the regulator and the sucking port of the
compressor and having an air inlet side, the evaporator being located
adjacent to the condenser of the air cooling type;
two independent air passages each having an opening through which air is
taken in, the condensers of the air and water cooling types located
adjacent tot he openings of the air passages, respectively; and
an air filter detachably arranged to cover the air inlet sides of the air
cooling type condenser and the evaporator.
2. The air conditioner according to claim 1, further comprising a drain pan
located under the evaporator and having a peripheral wall and air filter
guides protruding outward from the peripheral wall, the air filter being
positioned by the air filter guides.
3. The air conditioner according to claim 1, further comprising:
a body of the air conditioner;
a motor housed in the body and having a rotating shaft directed in the
vertical direction;
a fan of the centrifugal multi-blade type attached to the rotating shaft of
the motor; and
a casing enclosing the fan and having a sucking opening in the axial
direction thereof and a blowing opening in the circumferential direction
thereof,
the vertical dimension of the blowing opening of the casing being smaller
than that of the fan and the transverse dimension thereof being larger
than the diameter of the fan but smaller than the width of the air
conditioner body.
4. The air conditioner according to claim 1, further comprising:
a sprinkler means for sprinkling water over the water cooling type
condenser;
a drain hose connected to the sprinkler means to drain outside the air
conditioner body water collected in the sprinkler means; and
a drain hose housing section formed integral to the rear side of the air
conditioner body and enabling the open front end portion of the drain hose
to be fitted into the section while keeping the drain hose bent upward on
the way of it.
5. The air conditioner according to claim 4, wherein the drain hose housing
section includes a cut-away portion extending from a lower edge of the
rear side of the air conditioner body to a certain height, and plural
curved pieces formed on the top of the cut-away portion, projecting
alternately forward and backward, and wherein each of these curved pieces
is made semi-circular and when the adjacent ones projected forward and
backward are combined with each other, they form a circle.
6. An air conditioner comprising:
a compressor for compressing and circulating a coolant in a cooling
circuit;
a condenser of the air cooling type for cooling and condensing the
compressed coolant and having an air inlet side;
a condenser of the water cooling type for further cooling and condensing
the coolant which has been cooled and condensed by the air cooling type
condenser.
7. The air conditioner according to claim 6, further comprising a drain pan
located under the evaporator and having a peripheral wall and air filter
guides being protruding outward from the peripheral wall, the air filter
being positioned by the air filter guides.
8. The air conditioner according to claim 6, further comprising:
a body of the air conditioner;
a motor housed in the body and having a rotating shaft directed in the
vertical direction;
a fan of the centrifugal multi-blade type attached to the rotating shaft of
the motor; and
a casing enclosing the fan and having a sucking opening in the axial
direction thereof and a blowing opening in the circumferential direction
thereof,
the vertical dimension of the blowing opening of the casing being smaller
than that of the fan and the transverse dimension thereof being larger
than the diameter of the fan but smaller than the width of the air
condition body.
9. The air conditioner according to claim 6, further comprising:
a sprinkler means for sprinkling water over the water cooling condenser;
a drain hose connected to the sprinkler means to drain outside the air
conditioner body water collected in the sprinkler means; and
a drain hose housing section formed integral to the rear side of the air
conditioner body and enabling the open front end portion of the drain hose
to be detachably fitted into the drain hose housing section while keeping
the drain hose bent upward on the way of it.
10. The air conditioner according to claim 9, wherein the drain hose
housing section includes a cut-away portion extending from a lower edge of
the rear side of the air conditioner body to a certain height, and plural
curved pieces formed on the top of the cut-away portion, projecting
alternately forward and backward, and wherein each of these curved pieces
is made semi-circular and when the adjacent one projected forward and
backward are combined with each other, they form a circle.
11. An air conditioner comprising:
a compressor having sucking and discharging ports;
a condenser of the air cooling type having an inlet port connected to the
discharging port of the compressor and an outlet port;
a condenser of the water cooling type having an inlet port connected to the
outlet port of the condenser of the air cooling type and an outlet port;
a regulator connected to the outlet port of the condenser of the water
cooling type;
an evaporator connected between the regulator and the sucking port of the
compressor;
an air conditioner body housed the compressor, the air and water cooling
type condensers, the regulator and the evaporator,
a sprinkler for sprinkling water over the water cooling type condenser;
a drain hose having an open front end portion, connected to the sprinkler
to drain outside the air conditioner body water collected in the
sprinkler; and
a drain hose housing section formed integral tot eh rear side of the air
conditioner body and enabling the open front end portion of the drain hose
to be fitted into the section while keeping the drain hose bent upward,
the drain hose housing section including a cut-away portion extending from
a lower edge of the rear side of the air conditioner body, and plural
curved pieces formed on the top of the cut-away portion, projecting
alternately forward and backward, and wherein each of these curved pieces
is semi-circular and form a circle when the adjacent ones projected
forward and backward are combined with each other.
12. An air conditioner comprising:
a compressor for compressing and circulating a coolant in a cooling
circuit;
a condenser of the air cooling type for cooling and condensing the
compressed coolant;
a condenser of the water cooling type for further cooling and condensing
the coolant which has been cooled and condensed by the air cooling type
condenser;
an evaporator for evaporating the condensed coolant;
an air conditioner body housed the compressor, the air and water cooling
type condenser, the regulator and the evaporator;
a sprinkler for sprinkling water over the water cooling type condenser;
a drain hose having an open front end portion, connected to the sprinkler
to drain outside the air conditioner body water collected in the
sprinkler; and
a drain hose housing section formed integral to the rear side of the air
conditioner body and enabling the open front end portion of the drain hose
to be detachably fitted into the drain hose housing section while keeping
the drain hose bent upward, the drain hose housing section including a
cut-away portion extending from a lower edge of the rear side of the air
conditioner body, and plural curved pieces formed on the top of the
cut-away portion, projecting alternately forward and backward, and wherein
each of these curved pieces is semi-circular and form a circle when the
adjacent ones projected forward and backward are combined with each other.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an air conditioner of the carrier type
wherein all of means for forming the cooling cycle can be housed in a body
of the air conditioner and the air conditioner body itself can be carried
to any optional position in a room which is to be cooled.
2. Description of the Related Art
There is a case where the space of a room which is to be cooled by heat
exchange may be small although the room itself has a relatively large
space. In other words, the space of a room which is to be cooled by heat
exchange is sometimes wanted to change it smaller or larger.
It is advantageous in this case to use such an air conditioner that enables
all of means for forming the cooling cycle to be housed in a body of the
air conditioner and the air conditioner body itself to be carried to any
optional position in the room.
An example of this carrier type air conditioner is disclosed in the
Japanese Utility Model Publication Sho 52-17969, for example.
The air conditioner body of this carrier type is divided into cooling and
machine chambers by a partition wall and the cooling chamber houses an
evaporator, a cooled air blowing fan and the like, having at the front
side a grille through which air in the room is sucked and another grille
through which cooled air is blown out. A compressor, a heat exchanger of
the air cooling type which is a heating condenser, a sprinkler means, a
heat exchanger of the water cooling type which is an evaporating
condenser, a water tank, a pump and the like are arranged in the machine
chamber, which has at one side a grille through which heat exchanging air
is sucked.
The water cooling heat exchanger, the sprinkler means, the air cooling heat
exchanger and the like are enclosed by an air collecting cover. A casing
in which a fan is housed is connected to a discharging opening of the air
collecting cover. The casing is provided with an air exhausting opening to
which a flexible exhausting pipe communicated with outside the room is
connected.
A coolant, high in temperature and pressure, discharged from the compressor
is introduced at first to the air cooling heat exchanger and then to the
water cooling heat exchanger where it is condensed in the case of this air
conditioner. The pump is driven at the same time and water is sprinkled
over the water cooling heat exchanger by the sprinkler means while
applying pressure to water in a water tank. The water sprinkled is
evaporated while taking heat from the water cooling heat exchanger and
introduced to the air cooling heat exchanger by which it is heated to
raise its temperature and lower its relative humidity. The fan is also
driven and heat exchanging air introduced into the machine chamber through
the heat exchanging air sucking grille is cooled while exchanging heat
with the water cooling heat exchanger. It is mixed here with vapor of the
water which has been sprinkled by the sprinkler means and evaporated, to
become air of high humidity including a large amount of vapor and then
introduced to the air cooling heat exchanger. The mixed air, high in
humidity, is heated while exchanging heat with the air cooling heat
exchanger to raise its temperature and lower its relative humidity. The
air of high temperature and humidity after the heat exchanging process is
guided to the casing along the air collecting cover and exhausted outside
the room through the air exhausting opening and pipe.
The air cooling heat exchanger exchanges heat with the air of high humidity
and the water cooling heat exchanger exchanges heat with the water
sprinkled by the sprinkler means and the heat exchanging air sucked. The
coolant is condensed in this manner.
All of heat to be discharged from the air conditioner which serves as an
air cooling machine is exhausted outside the room through the exhausting
pipe. This enables the air conditioner body to be located at any position
in the room. The air exhausted outside the room has been heated by the air
cooling heat exchanger to lower its relative humidity to some extent, but
it is air high in temperature and humidity and also high in thermal
density. Therefore, no water drop is condensed on inner faces of the
casing and air exhausting opening and pipe through which it is passed.
In the case of this air conditioner, however, it is disadvantageous that
the efficiency of heat exchange is low particularly in the air cooling
heat exchanger. The air cooling heat exchanger is located above the water
cooling heat exchanger with the sprinkler means interposed between them.
The air cooling heat exchanger is located downstream the water cooling
heat exchanger in an air passage through which the heat exchanging air is
passed from the heat exchanging air sucking grille to the exhausting pipe
by the fan driven. This causes air, which comprises mixing vapor of water
sprinkled over the water cooling heat exchanger by the sprinkler means and
evaporated with air introduced by the fan to exchange heat with the water
cooling heat exchanger, to be introduced to the air cooling heat
exchanger. This mixed air has a temperature considerably higher than the
temperature in the room which is to be cooled, and it also has an
extremely high humidity.
On the other hand, the coolant introduced to the air cooling heat exchanger
just after it is discharged from the compressor is high in temperature and
it must exchange heat with the mixed air which is relatively high in
temperature and extremely high in humidity. Therefore, the efficiency of
heat exchange in the air cooling heat exchanger becomes low, thereby
making it difficult to lower the temperature of the coolant to a
predetermined value.
As the result, load is excessively added to the water cooling heat
exchanger in the course of heat exchange and the amount of water in the
water tank used up is considerably increased and the amount of water
evaporated in the course of heat exchange is increased accordingly. When
the amount of water remaining in the water tank becomes a little, it must
be added. The cooling operation of the air conditioner must be stopped
while water is being added to the water tank. This causes the time period,
during which the cooling operation is continued, to become short and the
number of times, at which water is added to the water tank, to be
increased. This is trouble- some and the temperature in the room which is
to be cooled is raised every time the cooling operation is stopped,
thereby making it difficult to keep the room comfortable.
Further, another factor which causes the efficiency of heat exchange in the
air cooling heat exchanger to be lowered is the amount of air selected by
the fan to blow or send humid air. When the amount of air blown out by the
fan is too much, the humid air sent from the water cooling heat exchanger
is passed through the air cooling heat exchanger without sufficiently
contacting the air cooling heat exchanger. Namely, there is a fear that
water drops in the humid air are exhausted outside the room through the
exhausting pipe without exchanging heat with the air cooling heat
exchanger. When the amount o air blown out by the fan is too little,
however, the amount of water drops evaporated while the heat of the humid
air is being exchanged with the air cooling heat exchanger exceeds that of
water drops newly sent. These water drops are left not evaporated,
remaining between fins which form the heat exchanger. This causes the
efficiency of heat exchange to be lowered in the air cooling heat
exchanger.
Still further, the air cooling heat exchanger is at all times in high humid
air which is almost vapor, and it is thus contacted with water drops. This
causes the fins to be eroded in a relatively short time period.
SUMMARY OF THE INVENTION
The object of the present invention is to provide an air conditioner
capable of enhancing the efficiency of heat exchange in the air cooling
heat exchange and preventing fins which form the heat exchanger from being
eroded.
This object can be achieved by an air conditioner comprising a compressor
for compressing and circulating a coolant in a cooling circuit, a
condenser of the air cooling type for cooling and condensing the
compressed coolant, a condenser of the water cooling type for further
cooling and condensing the coolant which has been condensed by the air
cooling condenser, an evaporator for evaporating the condensed coolant,
and two independent air passages through which air is supplied to both of
the air and water cooling condensers, respectively.
Additional objects and advantages of the invention will be set forth in the
description which follows, and in part will be obvious from the
description, or may be learned by practice of the invention. The objects
and advantages of the invention may be realized and obtained by means of
the instrumentalities and combinations particularly pointed out in the
appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are incorporated in and constitute a part
of the specification, illustrate a presently preferred embodiment of the
invention, and together with the general description given above and the
detailed description of the preferred embodiment given below, serve to
explain the principles of the invention.
FIG. 1 is a vertically-sectioned view showing an example of the air
conditioner according to the present invention;
FIG. 2 is a circuit diagram showing a cooling circuit for use with the air
conditioner;
FIG. 3 is a perspective view showing an internal arrangement in the air
conditioner;
FIGS. 4 and 5 are side and plan views showing casings for enclosing fans in
the air conditioner;
FIG. 6 is a front view showing a grille through which cooling lair is blown
out;
FIG. 7 is a sectional view showing the left side wall of the grille through
which cooling air is blown out;
FIG. 8 partly shows the right side wall of the grille through which cooling
air is blown out;
FIG. 9 is a perspective view showing the grille dismantled;
FIG. 10 is a perspective view showing the rear side of the air conditioner
from which the air filter is pulled;
FIG. 11 is a perspective view showing a part of that portion of the air
conditioner into which the air filter is fitted;
FIGS. 12 and 13 are vertically-sectioned views showing that portion of the
air conditioner into which the air filter is fitted;
FIG. 14 is a rear side view showing that portion of the air conditioner in
which the drain hose is housed;
FIG. 15 is a sectional view taken along a line I-I in FIG. 14;
FIGS. 16 and 17 are sectional and perspective views showing a hook of the
air conditioner to which the power cord is hooked;
FIG. 18 is a vertically-sectioned view showing water sprinkler and tray in
the air conditioner;
FIG. 19 is a traversely-sectioned view showing the water tray;
FIG. 20 is a partly-sectioned view showing a cooling chamber in the air
conditioner;
FIG. 21 is a perspective view showing a drain pan;
FIG. 22 is a side view showing a water supply hose;
FIG. 23 is a side view showing a water tank;
FIG. 24 is a side view showing the water tank provided with the water
supply hose;
FIG. 25 is a front view showing an operation panel of the air conditioner;
FIG. 26 is a block diagram showing an electric circuit for use with the air
conditioner;
FIG. 27 is a perspective view showing the air conditioner whose exhausting
hose is attached to a window frame;
FIG. 28 is a perspective view showing an attachment by which the exhausting
hose of the air conditioner is attached to the window frame; and
FIG. 29 is a sectional view showing the attachment.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
An embodiment of the present invention will be described in detail with
reference to the accompanying drawings.
Reference numeral 30 in FIG. 1 denotes an air conditioner body which is
provided with plural wheels 31 on the underside thereof to enable it to be
carried on the floor of a room. The inside of this air conditioner body 30
is divided into an upper cooling chamber 33 and a lower machine chamber 34
by a horizontal partition wall 32. A grille 36 through which cooled air is
blown out and which is provided with a louver 35 for adjusting the
direction of the cooled air blown out is arranged on the front side of the
cooling chamber 33. A sucking grille 37 is arranged on the rear side of
the cooling chamber 33 and an evaporator 38 which forms the cooling cycle
is located in opposite to the sucking grille 37. A drain pan 139 is
located under the evaporator 38 to receive drain water created by the
evaporator 38.
A motor 39 which has rotating shafts 39a and 39b projected outside from its
top and bottom is held, passing through the partition wall 32. These
shafts 39a and 39b are directed vertical and a first fan 40 is attached to
the rotating shaft 39a which is projected upward from the top of the motor
39. This first fan 40 is provided with upper and lower sucking openings
41a and 41b at the top and bottom thereof and it is enclosed by a casing
43 which has a blowing opening 42 communicated with the cooled air blowing
grille 36.
A grille 44 through which heat exchanging air is sucked is arranged on the
rear side of the machine chamber 34 and a heat exchanger 45 of the air
cooling type which serves as the condenser for the cooling cycle is
located in opposite to the air sucking grille 44. The heat exchanger 45 is
of the so-called finned tube type and it is tilted under the evaporator 38
with the partition wall 32 interposed between them. The heat exchanging
air sucking grille 44 is located under the sucking grille 37 with a
certain interval interposed between them and adjacent to an opening 200a
of the air passage 200. An air filter 46 is detachably attached to the
rear side of the body 30, interposing between the sucking grille 37 and
the evaporator 38 and between the heat exchanging air sucking grille 44
and the heat exchanger 45 of the air cooling type.
The heat exchanger 45 of the air cooling type is supported on a casing 47,
which is provided with upper and lower sucking openings 48 and 49 through
which the rotating shaft 39b projected downward from the motor 39 is
passed. The casing 47 encloses a second fan 50 attached to the rotating
shaft 39b. A blowing opening 51 of the casing 47 is introduced into an
opening 52 which is opened at the rear side of the body 30.
A flexible exhausting hose (not shown) is connected to the blowing opening
51 of the casing 47 and another end of the hose is connected to an
exhausting opening which is communicated outside through a wall of the
room in which heat exchange is conducted. As the exhausting hose is
flexible, the body 30 can be carried to any optional position in the room
and all of heat exchanging air taken into the machine chamber 34 can be
exhausted outside the room.
A heat exchanger 53 which serves as the condenser for the cooling cycle,
land a sprinkler means 54 are arranged under the casing 47. The condenser
comprises heat exchangers 45 and 53 of the air and water cooling types.
The heat exchanger 53 of the water cooling type is a heat exchanging pipe
coiled in double, and it is housed in a cover 55 which is a component of
the sprinkler means 54. This sprinkler cover 55 is opened at the top
thereof and communicated with the lower sucking opening 49 of the casing
47. The sprinkler cover 55 is also opened at the bottom thereof and the
heat exchanger 53 of the water cooling type is projected downward through
the opened bottom of the sprinkler cover 55. The lower portion of the heat
exchanger 53 is immersed in water in a water tray 56. The lower
circumference of the sprinkler cover 55 enters into the water tray 56 with
a certain interval interposed relative to the lower circumference of the
water tray 56. Further, the lower end of the sprinkler cover 55 is not
immersed in the water in the water tray 56 but separated from the level of
the water in the water tray 56 by a certain distance. A float switch 57 is
located on one side of the water tray 56 to detect the lowest level of the
water in the water tray 56.
A sprinkler 58 is fitted onto an end of the rotating shaft 39b which is
projected from the second fan 50, extending into the sprinkler cover 55
through the lower sucking opening 49 of the casing 47. The sprinkler 58 is
enclosed by the heat exchanger 53 of the water cooling type. The sprinkler
58 is a cylinder closed at the top thereof but opened at the bottom
thereof and this cylinder is tapered in such a way that its diameter
becomes gradually smaller from its top to its bottom. A vane 58a is
attached integral to the outer circumferential center portion of the
sprinkler 58 and a circular sprinkling hole 58b is formed adjacent to the
vane 58b. Further, plural sprinkling windows 58c which are slits are
formed adjacent to the upper end of the sprinkler 58.
An auxiliary sucking opening 201a is arranged at that lower portion of the
rear side of the machine chamber 34 which is adjacent to the
above-described sprinkler means 54.
As shown in FIG. 3, a part of the water tray 56 is extended sideward from a
partition plate 56a to form a water supply section 61 which receives water
supplied from a water tank 60. The partition plate 56a is provided with a
communicating pipe 62, through which an amount of water equal to that of
water used and evaporated on the side of the sprinkler 58 is added from
the water tank 60 to the side of the sprinkler 58 via the water supply
section 61.
The water tank 60 is freely detachable from the body 30, locating by the
sprinkler cover 55 and the casing 47. Further, a compressor 63 is located
side by side with the water tank 60. Reference numeral 64 in FIG. 3
denotes a flexible exhausting hose connected o the blowing opening 51 of
the casing 47.
As shown in FIG. 2, the heat exchanger 45 of the air cooling type is
connected to the discharge side of the compressor 63 through a coolant
pipe P, and the heat exchanger 53 of the water cooling type is then
located downstream the heat exchanger 45. The heat exchanger 53 is further
connected to the sucking side of the compressor 63 through a capillary
tube 65 and the evaporator 38. A cooling circuit or cycle is thus formed.
Reference numeral 120 represents a high pressure switch arranged between
the heat exchangers 45 and 53 to detect coolant pressure in the coolant
pipe P.
As shown in FIGS. 4 and 5, the vertical dimension A of the blowing opening
42 in the case of the casing 43 which encloses the first fan 40 is made
smaller than the longitudinal dimension B of a blade of the first fan 40.
The traverse dimension C of the blowing opening 42 may be made
substantially wider than the diameter D of the first fan 40 but a little
narrower than the front width of the body 30.
As shown in FIG. 6, the cooled air blowing grille 36 is divided into right
and left by a partition plate 95 which is located at the center of the
grille 36 in the width direction thereof. Plural pieces of the louvers 35
are held, freely swingable sideways, in the grille 36 with a certain
interval interposed between them in the width direction of the grille 36.
The louvers 35 arranged right and left the partition plate 95 are
associated with one another to move in the same direction. A fan guard 97
comprising plural wires 96 covers the cooled air blowing grille 36,
extending in the traverse direction of the grille 36 and passing through
all of the louvers 35 and the partition plate 95. The wires 96 are
arranged in the grille 36 with an extremely narrow interval interposed
between them in the vertical direction of the grille 36, thereby
preventing any matter from entering into the body 30 through the grille
36.
As shown in FIG. 7, the one side wall 36a of the cooled air blowing grille
36 is provided with plural wire fixing holes 98 which are arranged to have
a certain interval between them in the vertical direction of the grille
36. Each of the wire fixing holes 98 comprises a tapered section 98a which
has a diameter large enough to allow the wire 96 to pass therethrough and
whose diameter becomes gradually smaller as it comes from the inside
nearer to the outside of the wall 36a, and a hole section 98b which
extends outward from the bottom of the tapered section 98a, having such a
diameter that allows the wire 96 to be fitted thereinto.
As shown in FIG. 8, the other side wall 36b of the cooled air blowing
grille 36 is provided with plural wire inserting holes 99 which have a
certain interval between them in the vertical direction of the grille 36.
Each of the wire inserting holes 99 is elongated in the horizontal
direction and its one end 99a has a radius of curvature large enough to
allow the wire 96 to be smoothly passed therethrough while its other end
99b has such a radius of curvature that allows the wire 96 to be tightly
fitted thereinto. Therefore, the vertical width of each of the wire
inserting holes 99 becomes smaller from the large curvature radius end 99a
to the small curvature radius end 99b and it is made a little smaller than
the diameter of the wire 96 just before the small curvature radius end
99b.
The paired upper and lower wire inserting holes 99 are aligned with each
other in the vertical direction at their large curvature ends 99a and they
are also aligned or not aligned with each other in the vertical direction
at their small curvature ends 99b depending upon where they are located in
the side wall 36b in the vertical direction.
As shown in FIG. 9, the wire 96 which is bent in a fallen U extends in the
traverse direction along the whole length of the grille 36. More
specifically, both ends of the wire 96 are inserted into the paired upper
and lower wire inserting holes 99, passing at first 99. They are then
passed through paired upper and lower holes 100 of each of the louvers 35
and inserted into the paired upper and lower wire fixing holes 98, that
is, into the hole sections 99b through the tapered sections 98a. Those
both ends of the wire 96 which are projected outside from the wire fixing
holes 98 are appropriately fixed to the side wall 36a with the U-shaped
portion of the wire 96 struck against the side wall 36b of the grille 36.
The wire 96 thus arranged is then shifted in the wire inserting holes 99
from the large curvature radius ends 99a to the small curvature radius
ends 99b. When it is on the way of its being shifted in this manner, it is
forcedly pushed through those portions of the holes 99 whose vertical
width is smaller than the diameter of the wire and then fixedly seated in
the small curvature radius ends 99b of the holes 99.
As described above, the cooled air blowing grille 36 is provided with the
fan guard 97 which comprises the plural wires 96. This enables any matter
to be prevented from entering into the body 30. Further, the side wall 36a
of the grille 36 is provided with the wire fixing holes 98 each comprising
the tapered section 98a and the hole section 98b, so that each of the
wires 96 can be inserted into the holes 98 and then fixed to the side wall
36a with higher reliability.
Still further, each of the wires 96 can be more easily inserted into the
paired upper and lower wire inserting holes 99 in the side wall 36b of the
grille 36 because its both ends are passed at first through the large
curvature radius ends 99a of the holes 99. In addition, the vertical width
of each of the holes 99 is made a little smaller than the diameter of the
wire 96 just before the small curvature radius end 99b. Therefore, the
wire 96 is forcedly pushed through this portion of the hole 99 while it is
being shifted from the end 99a to the other end 99b of the hole 99, and
then fixedly seated in the small curvature radius end 99b, so that it can
be fixedly held in the end 99b with higher reliability while its movement
in the hole 99 is being prevented by that portion of the hole 99 whose
vertical width is a little smaller than the diameter of the wire 96.
As shown in FIG. 10, a rear side panel 30a is freely detachably attached to
the back of the air conditioner body 30 and it includes the sucking grille
37 and the heat exchanging air sucking grille 44 which are separated from
each other by a certain distance in the vertical direction. The air filter
46 is freely detachably inserted into the body 30 inside the panel 30a,
facing the grilles 37 and 44.
As shown in FIGS. 11 through 13, the top of the rear side panel 30a is
curved and a slit 95 through which the air filter 46 is inserted into the
body 30 is formed at a part of the curved top of the rear side panel 30a.
The air filter inserting slit 95 extends in the width direction of the
rear side panel 30a, leaving its both ends separated from those of the
rear side panel 30a by a certain distance. A horizontal flange 96 extends
from the top of the front side of the slit 95 while the rear side thereof
extends downward in the vertical direction to form a guide face 97. The
air filter inserting slit 95 is formed between the flange 96 and the guide
face 97.
The air filter 46 has such thickness and width that allow it to be freely
detachably inserted into the slit 95, and it has at the upper portion
thereof a hook 46a which is hooked on the flange 96.
As shown in FIG. 10, the exhausting hose 64 extends from the substantially
center portion of the rear side panel 30a and from under the heat
exchanging air sucking grille 44. The rear side panel 30a includes
adjacent to its bottom a drain hose housing section 66 and a cutaway
portion 68 through which a power source cord 67 extending from a power
source section (not shown) in the body 30 is passed. A projection 69 on
which a cord grip 68 for holding the power source cord 67 as a bundle is
hooked is formed integral to the rear side panel 30a between the grilles
37 and 44.
As shown in FIGS. 14 and 15, a cut-away portion 66ais formed at the drain
hose housing section 66, extending upward from the bottom of the rear side
panel 30a to a certain height, and plural curved pieces 66b are then piled
upward one upon the other, projecting alternately forward and backward.
Each of the curved pieces 66b is made semi-circular and the adjacent ones
form a true circle when they are combined with each other. The diameter of
this circle is made a little larger than that of an open front end portion
70a of a drain hose 70 connected to the water tray 56. That portion which
extends upward from the uppermost curved piece 66b is swelled outward to
form a swelled portion 66c.
As shown in FIG. 16, the hooked projection 69 is formed by projecting
outward a part of the rear side panel 30a like a mountain and the top of
the projections is parallel to the rear side panel 30a. The projection has
such width and height that allow the cord grip 68 to be inserted into it.
As shown in FIG. 17, the cord grip 68 is held by the hooked projection 69
while a part of it is being inserted into the projection 69, and the
bundled power source cord 67 is then hooked by the cord grip 68.
As shown in FIGS. 18 and 19, a rib 71 is formed integral to the water tray
56. The rib 7 comprises plural pieces located on a circle concentric to
the sprinkler 58, separated from the outer circumference of the sprinkler
58 by a certain distance and also separated from the adjacent ones by a
certain distance. The height of the rib 71 must be made larger than the
surface level of water collected in the water tray 56.
As shown in FIGS. 20 and 21, plural drain water discharging openings 72 are
formed at the bottom of the drain pan 139 arranged under the evaporator
38, and they are communicated with the hole 73 of the partition wall 32.
One end of a hose (not shown) is connected to the communicating hole 73
while the other end thereof is connected to the water tray 56. All of
drain water created by the evaporator 38 is thus introduced into the water
tray 56. A pair of air filter guides 74 are formed on the rear side of the
drain pan 139. These air filter guides 74 are projected so that both sides
of the air filter may be struck against them when the air filter 46 are
inserted into the body 30 inside the rear side panel 30a.
As shown in FIG. 22, the air conditioner of the present invention has a
water supply hose 75 through which water is supplied to the water tank 60.
The water supply hose 75 includes cylindrical couplings 75a and 75b, and
an expansive flexible hose section 75c which connects the couplings 75a
and 75b to each other. The diameter d.sub.1 0 of the coupling 75a is made
smaller than that d.sub.2 0 of the other coupling 75b and the coupling 75a
can be thus detachably fitted into the coupling 75b.
As shown in FIG. 23, a hose holder recess 60a, semi-circular in section, is
formed round the outer circumference of the water tank 60 and the
curvature radius of this hose holder recess 60a is about same as that of
the coupling 75b. A grip 76 is formed on the top of the water tank 60
while a water supply opening 77 is projected from the underside of the
water tank 60. A cap 78 provided with a valve system is screwed onto the
water supply opening 77.
FIG. 24 shows the water supply hose 75 held in the hose holder recess 60a
of the water tank 60. The hose section 75c of the water supply hose 75 is
expanded to some extent and the coupling 75a is fitted into the other
coupling 75b. The water supply hose 75 is thus wound round the water tank
60 in the hose holder recess 60a.
As shown in FIG. 25, an operation panel 80 is arranged on a part of the
front side of the body 30. Switches 81 are arranged on the upper portion
of the operation panel 80 and lamps 82 and a power switch 83 are arranged
on the lower portion thereof. Fan, dry or cool can be selected by an
operation mode switch 84 of the switches 81. High, low or automatic can be
selected by a changeover switch 85 to adjust the amount of air blown by
the first fan 40. "Continued", "switched on after the lapse of a set time"
or "switched off after the lapse of a set time" can be selected by a timer
switch 86. Any optional cooling temperature can be set in a range of
predetermined temperatures by a temperature set switch 87. Any optional
time can be set in a range of predetermined times by a timer switch 88. An
abnormal lamp 89 of the lamps 82 is lit only when something wrong such as
abnormal rise of pressure and failure of water supply occurs. Lamp 90 is
lit only when the float switch 57 detects that the surface level of water
in the water tray 56 is lower than a predetermined level. A timer lamp 91
is lit when the timer is under operation. An operation lamp 92 is lit when
the power switch 83 is switched on.
As shown in FIG. 26, a control circuit 93 which comprises a micro-computer
for the air conditioner is electrically connected to the switches 81 and
the lamps 82 on the operation panel 80, the float switch 57 in the water
tray 56, the compressor 63 which forms the cooling cycle, the motor 39 and
an alarm buzzer 94.
The operation of the air conditioner which is arranged as described above
will be described.
As shown in FIGS. 1 through 4, the compressor 63 is driven to compress the
coolant and blow it under high temperature and pressure. At the same time
the motor 39 is switched on to simultaneously drive the first and second
fans 40 and 50 and the sprinkler 58. The coolant is introduced from the
heat exchanger 45 of the air cooling type into the heat exchanger 53 of
the water cooling type where it is condensed while exchanging heat. It is
further introduced into the capillary tube 65 to reduce its pressure and
then into the evaporator 38 where it is evaporated. Heat exchanging air in
the room which is to be cooled has been introduced into the evaporator 38
and it exchanges heat with the coolant so that the latent heat of
vaporization can be taken from it. Its temperature is thus lowered to
create cooled air, which is again blown into the room. The cooling of the
room is thus conducted.
On the other hand, the first fan 40 takes heat exchanging air into the
cooling chamber 33 through the sucking grille 37. This heat exchanging air
is filtered by the air filter 46 and passed through the evaporator 38
while it is exchanging heat with the coolant to become cooled air after
the latent heat of vaporization is taken off from it. The cooled air is
sucked into the first fan 40 through the upper and lower openings 41a and
41b of the casing 43 and again blown into the room through the opening 42
of the casing 43 and the cooled air blowing grille 36.
According to the embodiment of the present invention, the vertical
dimension A of the opening 42 of the casing 43 is made smaller than the
longitudinal dimension B of the blade of the first fan 40 and the traverse
dimension C thereof is made considerably larger than the diameter D.phi.
of the first fan 40, that is, substantially close to the traverse
dimension of the front side of the body 30, as shown in FIGS. 4 and 5.
Therefore, the cooled air blown by the first fan 40 gradually raises its
static pressure while it flows from the fan 40 to the blowing opening 42.
Its flow is thus scattered in the traverse direction. In fact, the speed
of its flow is averaged by the time when it is blown outside through the
blowing opening 42, and it can be uniformly blown out into the room while
its amount blown out through the cooled air blowing grille 36 is being
averaged in the traverse direction of the grille 36.
As shown in FIGS. 1 through 4, the second fan 50 is driven together with
the first fan 40 to take heat exchanging air into the machine chamber 34
through the heat exchanging air sucking grille 44. The heat exchanging air
is filtered at this time by the air filter 46 to thereby keep the heat
exchanger 45 of the air cooling type clean. The heat exchanger 4 of the
air cooling type is located adjacent to the evaporator 38 with the
partition wall 32 interposed between them. This enables the air filter 46
to filter both of the room air introduced to the evaporator 38 and the
heat exchanging air introduced to the heat exchanger 45 of the air cooling
type. In addition, the partition wall 32 interposed between the evaporator
38 and the heat exchanger 45 enables both of the evaporator 38 and the
heat exchanger 45 to conduct heat exchange independently of the other. The
heat exchanger 45 of the air cooling type is tilted. Therefore, a
sufficient amount of heat exchanging air can be obtained even if the
vertical dimension of the heat exchanging air sucking grille 44 is made
small.
Except when the air conditioner is started, the heat exchanger 45 of the
air cooling type exchanges heat with the heat exchanging air, relatively
low in temperature and humidity, in the room which has been already
cooled. Therefore, temperature difference between the coolant and the air
introduced to the heat exchanger 45 is so large that the efficiency of
heat exchange can be made large.
The air which has been passed through the heat exchanger 45 of the air
cooling type to exchange heat is introduced into the casing 47 through the
upper sucking opening 48 of the casing 47 and exhausted outside the room
through the opening 51 and the exhausting hose 64.
The air in the room is also sucked into the machine chamber 34 through the
auxiliary sucking grille 59 and introduced into the sprinkler cover 55,
passing between the lower outer circumference of the sprinkler cover 55
and the upper inner circumference of the water tray 56, due to the
operation of the second fan 50. The heat exchanging air exchanges heat
with the heat exchanger 53 of the water cooling type in the sprinkler
cover 55. It is then introduced into the casing 47 through the lower
sucking opening 49 of the casing 47 and combined with the air which has
exchanged heat with the heat exchanger 45 of the air cooling type to be
exhausted outside the room through the exhausting hose 64.
The sprinkler 58 is rotated by the motor 39 to suck up water in the water
tray 56 along its inner circumference through its bottom opening due to
its centrifugal force. The water which has reached the sprinkling hole and
windows 58b and 58c is sprinkled, flying out through the hole and windows
58b and 58c. The heat exchanger 53 of the water cooling type receives
directly drops of water sprinkled by the sprinkler 58 or indirectly drops
of water once struck against and splashed by the sprinkler cover 55. Or
drops of water dropped on the top of the coiled tube of the heat exchanger
53 flow downward along the bottom of the tube. The blade 58a attached to
the outer circumference of the sprinkler 58 stirs up the air in the
sprinkler cover 55 while it is being rotated, to thereby assist the air in
exchanging heat with the heat exchanger 53. At the same time, it receives
drops of water struck against and splashed by the heat exchanger 53 to
again sprinkle them on the heat exchanger 53.
The heat exchanger 53 of the water cooling type sufficiently undertakes the
water sprinkling operation of the sprinkler 58, thereby enabling the
coolant and the water introduced to the heat exchanger 53 to exchange heat
with each other. Most of the water drops which have drenched the heat
exchanger 53 falls into the water tray 56 and it is again sprinkled y the
sprinkler 58. A part of the water drops is vaporized and mixed with the
air which has been introduced into the sprinkler cover 55 and exchanged
heat with the heat exchanger 53 to become air of high humidity. This high
humid air is introduced into the casing 47 through the lower sucking
opening 49 of the casing 47 and mixed with the heat exchanging air which
has been sucked through the upper sucking opening 48 and exchanged heat
with the heat exchanger 45 of the air cooling type. The high humid air
introduced from the sprinkler cover 55 exchanges heat with the heat
exchanger 45 of the air cooling type while it is being heated to air of
relatively high temperature. This air is changed to air of low humidity on
the way of its being introduced from the second fan 50 to the exhausting
hose 64 and it is exhausted outside through the hose 64. This prevents
water drops from adhering to the second fan 50 and the exhausting hose 64.
As shown in FIG. 1, therefore, a first air passage 200 extending from the
heat exchanging air sucking grille 44 to the exhausting hose 64 through
the heat exchanger 45 of the air cooling type, upper sucking opening 48,
second fan 50 and blowing opening 51 is formed in the machine chamber 34
along with a second air passage 201 extending from the auxiliary sucking
grille to the exhausting hose 64 through the sprinkler cover 55, lower
sucking opening 49, second fan 50 and blowing opening 51. The heat
exchanger 45 of the air cooling type is located on the sucking side of the
first air passage 200 and the heat exchanger 53 of the water cooling type
on the sucking side of the second air passage 201. No water drop sprinkled
by the sprinkler 58 adheres to the heat exchanger 45 of the air cooling
type. There- fore, the heat exchanger 45 is neither eroded nor jammed with
water drops, thereby enabling the heat exchange to be attained with a
higher reliability. The heat exchanger of the water cooling type is bathed
in water sprinkled by the sprinkler 58 and also contacted with the hat
exchanging air introduced through the second air passage 201. This also
enables the heat exchange to be achieved with a higher reliability. An
amount Q of heat exchanged on this high pressure side can be expressed as
follows:
Q=Q.sub.1 +Q.sub.2
Q.sub.1 =Kc (Tc-Ta)
Q.sub.2 =Cu.multidot.G
wherein Q.sub.1 represents an amount of heat exchanged by the heat
exchanger 45, Q.sub.2 an amount of heat exchanged by the heat exchanger
53, Kc a rate of heat (Kcal/h.multidot..degree. C.) exchanged by the heat
exchanger 45, Tc an average temperature (.degree. C.) of the coolant in
the heat exchanger 45, Ta a temperature (.degree. C.) of air sucked into
the heat exchanger 45, Cu a latent heat (Kcal/Kg) of water and G an amount
(Kg/h) of water consumed.
Providing that the amount Q of heat exchanged on the high pressure side is
certain. Tc-Ta becomes large and Q.sub.1 is increased when the heat
exchanger 45 of the air cooling type is located in the air passage 200
different from that of the heat exchanger 53 of the water cooling type.
Q.sub.2 becomes small instead, while keeping Cu certain. G is thus
decreased. Namely, the amount of water consumed is reduced to a greater
extent, the time period during which the air conditioner can be
continuously operated is made considerably longer and the interval during
which no water may be added into the water tank 60 is made longer. The
labor of adding water into the water tank 60 can be thus saved.
The air conditioner of the present invention has the following
characteristics:
As shown in FIGS. 11 through 13, the air filter 46 is inserted into and
pulled out of the slit 95 on the top of the rear side panel 30a. When the
air filter 4 is to be located inside the rear side panel 30a, it may be
dropped into the slit 95 while keeping its lower end portion inserted into
the slit 95. It is guided by the guide face 97 at this time. And when the
hook 46a at its top is hooked on the flange 96 on the top of the rear side
panel 30a, the process of locating it inside the rear side panel 30a is
finished.
When the top of the air filter 46 is shaped to match the curved top of the
rear side panel 30a and colored in same color as that of the top of the
rear side panel 30a, it can seem to merge into the top of the rear side
panel 30a.
The air filter 46 can be smoothly pulled out of the slit 95 on the top of
the rear side panel 30a because it is guided by the guide face 97.
The slit 95 is formed on the top of the rear side panel 30a as described
above. Therefore, that portion of the rear side panel 30a which is
attached to the body 30 can be freely selected and its rigidity can be
thus enhanced, thereby making it unnecessary to divide the air filter 46
into right and left.
As shown in FIGS. 14 and 15, the drain hose 70 connected to the water tray
56 is bent upward at about right angle on the way of it and its front end
portion is inserted into the drain hose housing section 66, as shown by
two-dot and dash lines, except when water collected in the water tray 56
is to be drained. A part of the water in the water tray 56 can be held in
it because the level of its front end opening is made higher than that of
the water surface in the water tray 56. In addition, it can be more easily
housed in the drain hose housing section 66. The curved pieces 66b which
form the drain hose housing section 66 are projected alternately forward
and backward and each of these curved pieces 66b is made substantially
semi-circular. And when the curved piece 66b projected forward is combined
with its adjacent one projected backward, they form a true circle, and the
diameter of this true circle is made a little smaller than that of the
drain hose 70. This enables the drain hose 70 to be held and housed in the
drain hose housing section 66 with a higher reliability. When the drain
hose housing section 66 is shaped as described above and the drain hose 70
is colored in same color as that of the rear side panel 30a, the drain
hose 70 can be hardly viewed from outside, thereby keeping the appearance
of the air conditioner fine.
When the water tray 56 is to be cleaned, the drain hose 70 is pulled out of
the drain hose housing section 66 and extended outside the rear side panel
30a. Because the front end opening of the drain hose 70 is made lower than
the bottom of the water tray 56, all of the water in the water tray can be
drained. This makes it easier to drain the water in the water tray 56.
As shown in FIGS. 16 and 17, the hooking projection 69 is formed integral
to the rear side panel 30a. Therefore the cord grip 68 by which the power
cord 67 is bundled up can be hooked by the projection 69. Different from
the conventional cases where the power cord 67 was left on the floor of
the room which was to be cooled, while being bundled up by the cord grip
68, the power cord 67 can be more easily put into order, its safety can be
enhanced and it cannot spoil the appearance of the air conditioner.
As shown in FIGS. 18 and 19, the rib 71 formed integral to the water tray
56 encloses the sprinkler 58, its top is made higher than the surface of
water in the water tray 56, and it is divided into pieces on the circle
concentric with the sprinkler 58 Even when the surface of water in the
water tray 56 waves as the sprinkler 58 sucks up the water collected in
the water tray 56, therefore, the rib 71 can prevent the surface of water
in the water tray 56 from waving. As the result, any noise because of the
waving water surface can be neither created nor sounded outside. In
addition, the lower portion of the sprinkler 58 inside the rib 71 is kept
immersed in the water in the water tray 56. This enables a predetermined
amount of water to be sucked up and sprinkled by the sprinkler 58.
As shown in FIGS. 20 and 21, the air filter 46 covers both of the sucking
grille 37 located on the side of the evaporator 38 and of the heat
exchanging air sucking grille 44 located on the side of the heat exchanger
45 of the air cooling type to thereby filter air sucked through both of
them. When the air filter 46 is to be cleaned to prevent it from being
jammed by dust, it may be pulled out from inside the rear side panel 30a
through the slit 95.
When the cleaning of the air filter 46 is finished, the air filter 46 is
again inserted inside the rear side panel 30a through the slit 95. The
lower end portion of the air filter 46 is slidably contacted with and
guided by the air filter guides 74 projected from the drain pan 39. In
other words, the air filter guides 74 help the air filter 46 be smoothly
located inside the rear side panel 30a.
When the air filter 46 is located at the predetermined position inside the
rear side panel 30a, its intermediate portion is pushed against the rear
side panel 30a. Even when the air conditioner is vibrated under operation,
therefore, the air filter 46 is not shaked to thereby prevent any noise
from being created.
As shown in FIGS. 22 through 24, the water supply hose 75 is wound round
the water tank 60 in the hose holder recess 60a and one of the couplings
75a and 75b is fitted into the other. This enables the housing of the
water supply hose 75 to be more easily attained. When water is to be
supplied to the water tank 60, one of the couplings 75a and 75b is pulled
out of the other to detach the water supply hose 75 from the water tank
60. The coupling 75a, for example, is connected to the water supply
opening 77 from which the cap 78 has been detached, while the other
coupling 75b is connected to the water supply source such as the faucet.
The water supply into the water tank 60 can be more easily attained in
this manner.
When water in the water tank 60 is consumed as water in the water tray 56
is sprinkled by the sprinkler 58 and when the float switch 57 detects that
the surface of water in the water tray 56 is lower than the predetermined
value, detection signal is applied to the control circuit 93, as shown in
FIGS. 25 and 26. The control circuit 93 then sends signal to the lamp 90
on the operation panel 80 and the lamp 90 is lit or flickered for a
certain time period responsive to the signal. Or the alarm buzzer 94 is
made operative for a certain time period to inform the user that water in
the water tank 60 is used up. Responsive to the lit or flickering lamp 90
or sounding buzzer 94, the user takes the water tank 60 out of the body 30
and detaches the water supply hose 75 from the water tank 60, as shown in
FIGS. 22 through 24. Water is supplied into the water tank 60 through the
water supply hose 75 and the water tank 60 thus filled with water is then
located at the predetermined position in the body 30. It is needed that a
series of these processes is quickly done. Because the efficiency of heat
exchanged by the heat exchanger 53 of the water cooling type is reduced
when the amount of water sprinkled over to the heat exchanger 53 is
decreased. This causes the abnormal lamp 89 to be lit and the cooling
operation of the air conditioner to be stopped accordingly.
According to the air conditioner of the present invention, water supply
into the water tank 60 can be quickly attained, it is not needed that the
cooling operation is stopped every time water is supplied to the water
tank 60, and temperature in the room is not raised accordingly to keep the
room comfortably cooled.
When the timer switch 86 is made operative to set on or off the air
conditioner after the lapse of a certain time period, not knowing that the
amount of water left in the water tank 60 is quite a little, the lamp 90
is lit before the lapse of the certain time period. If water is supplied
to the water tank 60 at once even in this case, the effect of the timer
can be kept because the cooling operation of the air conditioner is
continued.
Although the flexible exhausting hose 64 has been fitted into the hole of
the wall of the room which is to be cooled in the case of the
above-described air conditioner of the present invention, it is not
limited to this arrangement but it may be arranged as shown in FIG. 27. A
window attachment 103 is fixed between a window frame 101 and a sash 102a
of a window 102 and the exhausting hose 64 extending from the air
conditioner body 30 is fitted into a hole 104 of the window attachment
103.
As shown in FIG. 28, the window attachment 103 comprises a pair of right
and left attachment plates 105, which can be slid relative to each other
to correspond to the traverse dimension of the window frame 101. The upper
portion of each of the attachment plates 105a is bent like a character L
while the lower portion thereof is bent like a character U.
As shown in FIG. 29, the window attachment 10 is attached to the window
frame 101 in such a way that its U-shaped lower end 105b is mounted on the
window frame 103 and fixed there by fixing members 106 such as screws and
that the sash 102a of the window 102 is mounted on its L-shaped upper end
105a and fixed there by fixing members 106 such as screws. Namely, the
sash 102a of the window 102 is fixed to the window attachment 103, while
contacting its side which is directed into the room with the top side of
the window attachment 103 and its bottom with the top bottom of the window
attachment 103.
Therefore, the sash 102a of the window 102 and the window attachment 103
are contacted with each other at their two faces. This enables them to be
attached to each other with a higher strength and to prevent rain from
entering into the room without using any sealing member between them,
thereby enhancing their sealing ability.
It should be understood that the present invention is not limited to the
above-described embodiment but that various changes and modifications can
be made without departing from the spirit and scope of the present
invention.
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